Can cold extract coffee be heated? Should Ice-drop cold extract coffee be made with cold water or hot water? What is the difference between cold extract coffee and regular coffee?

Cold coffee is very simple to make and tastes strong and smooth, so it has become a regular "coffee companion" in the daily life of many friends. Especially in summer, full-bodied cold coffee has been in short supply in Qianjie stores. But recently, the increasingly cold weather has greatly reduced the audience of cold extraction coffee, and the cold extraction of shops on Qianjie has been unsalable. So this morning, Qianjie looked at the cold extract in the refrigerator and inexplicably thought of a question I saw some time ago: can cold extract coffee be heated?

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If you think about it, although Qianjie has tried to heat all kinds of coffee (such as hand-brewed coffee, latte, etc.), it seems that the heating experiment of cold-extracted coffee has not been tried. So, today, let's try what the heated cold coffee tastes like. Be reasonable, although this topic seems a little abstract, in fact, it is quite abstract. Before that, let's find out if the cold coffee can be heated.

Can the cold extract coffee be heated? Because the normal products of cold-extracted coffee are cold drinks, I believe that many people, like Qianjie, have a lot of question marks when they see this topic. But strictly speaking, the heating of cold-extracted coffee is not impossible. Why? Because cold-extracted coffee mainly refers to the way of extracting coffee at low temperature. Whether it is drip-type iced coffee or soaked cold-soaked coffee (also called cold extract), they all belong to a kind of cold-extracted coffee. Because they all use cold water to extract coffee, rather than the hot water used in other coffee-making methods. In other words, coffee extracted with cold water can be called cold extracted coffee.

Because the temperature of cold water is too low and the extraction efficiency is not high, it will take a long time to extract coffee with cold water at low temperature. But it is precisely because the dissolving efficiency of cold water is not high, so the bitter substances in coffee do not dissolve too much, and we do not have to worry about coffee being prone to extraction. Generally speaking, as long as the parameters are right, then in the end, we get coffee with outstanding flavor, soft and smooth taste and high sweetness. With the low temperature of coffee, the feeling of bitterness and sour is further reduced, so a cold extract coffee is straight out with ice after it is made, and no one will deliberately heat it.

Therefore, we can know that cold-extracted coffee can not be heated! So, today, let's try what the heated cold coffee tastes like.

How to heat the cold coffee? Although there are many ways to heat coffee, not all of them are suitable for heating coffee. For example, the steam bar of the coffee machine. Although the steam stick allows us to heat the coffee in the shortest possible time, the steam from the steam bar will dilute the concentration of the coffee. At the same time, the "milk flavor" contained on the steam bar will also be added to the coffee. In order to guard against it, the simplest way is obviously not available. It is not recommended to use heating tools such as microwave ovens in front of the street, because just as food put in the refrigerator and not sealed will carry the smell of refrigerator, the food put in the microwave oven is also easy to catch the smell. In the end, in order to ensure that the cold-extracted coffee can not be diluted and not contaminated in the heating process, Qianjie adopted the most simple way to heat it directly. The specific steps are simple. First, we take the cold extract out of the refrigerator and then pour it into a container that can be heated.

Turn on the induction cooker to heat the coffee and remove the fire when the coffee reaches about 75 °C.

Pour it into a prepared cup and start tasting directly.

The beans used in the cold-extracted coffee used in Qianjie are Honduras Shirley. Before heating, the cold-extracted coffee flavor of the beans is full-bodied whisky, cream, vanilla and chocolate, slightly sour and high sweet. The taste is smooth and soft. After heating, through tasting, we can feel that the aroma of whisky is obviously weakened, the bitterness of chocolate is enhanced, and the acidity of some berries is also magnified. The flavor is: chocolate, berries, nuts, whisky, the taste is sour, a little bitter, the sweetness is lower, the taste is not so soft, but still smooth.

It's okay, it's not as strange as I thought. In fact, Qianjie expected such a result before cooking, because just like the latte and hand heating experiments done in Qianjie, we will change the flavor and taste of coffee when we heat coffee, so Qianjie is psychologically prepared before heating cold coffee. There are two reasons: the first is that the flavor of coffee mainly comes from aroma substances, most of which are volatile. Therefore, when we heat up, the originally slowly volatile coffee flavor substances will accelerate the loss, when the coffee heating is completed, some flavor performance will not be as outstanding as before.

The second reason is that temperature changes the ability of our taste buds to perceive taste. As mentioned in the front street, cold-extracted coffee is less sour and bitter in part because the low temperature of coffee lowers our perception of both. When the temperature of the coffee rises, the taste buds' ability to perceive both has been improved, so the sour and bitter taste of the coffee will be more prominent, not as soft as before. To sum up, we can know why the cold extract coffee is not heated after it is made, the main reason is that the performance of the coffee is not as good as it used to be. Therefore, it is not recommended to try.

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